The node names should be generic and DT schema expects certain pattern:

  keystone-k2hk-evm.dtb: leds: 'debug1_1', 'debug1_2', 'debug2', 'debug3' do not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+'

Link: https://lore.kernel.org/r/20221125144123.477005-1-krzysztof.kozlowski@linaro.orgSigned-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>